Respiration is difficult at great heights.
在很高的高原上呼吸很困难。
The oxygen poor air at great heights causes a person's heart to work extra hard.
高山的缺氧常常会引起人们工作额外的辛苦。
This is great; no more absolute font sizes appearing at (strangely) different pixel heights on different browsers.
这很棒，不会再有绝对字体大小在不同浏览器中以(奇怪的)不同像素高度显示了。
This is great; no more absolute font sizes appearing at (strangely) different pixel heights on different browsers.
这很棒，不会再有绝对字体大小在不同浏览器中以(奇怪的)不同像素高度显示了。
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